US1257986A

US1257986A - Projecting apparatus.

Info

Publication number: US1257986A
Application number: US11610616A
Authority: US
Inventors: Joseph A England
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-08-21
Filing date: 1916-08-21
Publication date: 1918-03-05
Anticipated expiration: 1935-03-05

Description

J. A. ENGLAND.

PROJECTING APPARATUS.

APPLICATION HLED AUG-21,

1m Patented Mar. 1918.

2 SHEETS-SHEET amuwmm,

J. A. ENGLAND.

PROJECTING APPARATUS.-

APPLICATION HLED AUG-2!, l9l6.

131M 6, Patented Mar. 5, 1918.

2 SHEETS-SHEET 2.

'J'OSEPH A. ENGLAND, OF WASHINGTON, DISTRICT OF COLUMBIA.

PROJ'EG'IING AIEPARATUS.

mamas.

- Specification of Letters Patent.

Patented lvltai'.5,1918.

Application filed August 21, 1916. 'Eierial No. 116,106.

T all whom it may concern Be it known that I, JOSEPH A. ENGLAND, acitizen of the United States, residing at Washington, in the District of Columbia, have invented new and useful Improvements in Projecting'Apparatus, of which the following is a specification.

This invention is an improved device for supporting and exhibiting lantern slides.

One of the objects of the invention is to provide an improved slide carrying means whereby one slide may be retained in pro jecting position while another slide is being changed, thereby greatly facilitating the projecting operations. A further ob ect is to provide a reciprocable slide carrier and means for maintaining it at either extreme of its reciprocatory movement. A further object is to provide means whereby the shutter may be automatically controlled by movements of the slide carrier. A further object is to provide an improved shutter mechanism and slide carrier so correlated that the shutter will be closed while the slide carrier is moving, and promptly opened at the end of the movement of said slide carrier. Y e

T he invention will be hereinafter fully set forth and particularly pointed out in the claims.

In the accompanying drawings Figure 1 is a longitudinal sectional view illustrating the projecting apparatus, lamp, casing, etc. Fig. :2 is a transverse sectional view on the line 22, Fig.1, looking toward the slide carrier, showing the slide carrier in raised position. Fig. 3 is a transverse section on the line 33, Fig. 1. Fig. 4 is a transverse section on theline 11, Fig. 1. Fig. 5 is a detail view illustrating the slide support.

Referring to the drawings, a supporting frame is provided with tubular side bars 11, supported at the forward end by a standard 12 and at its rear end by a rectangular frame 13, preferably constructed of angle iron, although the invention is not limited in this particular. The frame 13 is provided with top and bottom rearwardly extended flanges 14, to which the ends of vertically disposed tubular guides 15 are secured, said guides being located opposite the vertical side bars of the frame 13. The slide carrier 16 is constructed of suitable material, preferably sheet metal, being provided with spaced apart walls 17, connected in suitable manner at their edges and having openings 18 for framing the slides to be projectedby the apparatus- Below each. opening 18 is a guide 19 for a slide support 20, slidably connected to said guide, suitable means being provided to limit the movement of each slide support. Suitably attached to the slide carrier 16 is a guide frame comprising vertical portions having guide members 21 slidably engaging the guides 15, said guide members being connected by, and stiffened by transverse bars, to which the slide'carrier is secured. The upper end of the slide carrier is' provided with overhanging ears 22, to which are attached guide rods 23 extending downwardly into the. tubular guides '15. From the foregoing it will be seen that the slide carrier is mounted for vertical reciprocation, being guided by guide members 21 and the guide rods 23, so as to move smoothly without lost motion.

The slide carrier maybe reciprocated in any suitable manner. In the drawings is shown an actuator shaft-25, rotatably supported in suitable bearings carried by the side bars 11, and attached to said shaft is an actuator drum 26 provided with a peripheral groove 27 to receive a chain or other flexible member 28, attached to a depending lug 29 On the slide carrier. One end of the chain is secured to a pin 30 extending radially from the periphery of the drum 26, and the other end of the chain is attached to an adjusting device 31 having a threaded end extending through an opening in the pin 30, said threaded end being engaged by a nut 32. The chain 28 passes around guide pulleys 33 secured to the frame in suitable manner. with a" milled hand grip 34;, by which said shaft may be: conveniently rotated. By rotating the shaft in one direction the slide carrier is elevated, and by reversing the direction of rotation of'said shaft, the slide carrier is lowered. The slide carrier may be counterbalanced in any preferred manner. For instance, the drum 26 may be cut away as indicated at 35 so as to position the heavier portions of the drum to holdthe slide in either of its positions. In order to prevent lost motion, a suitable catch pawl 36, cooperating with a ratchet wheel 37 may be provided. the same serving as a brake to hold drum 36 stationary.

The lens casing 40, is supported in a suitable frame 41 carried by slidebars 4E2, tele- The actuator shaft is provided.

scoping with thesidebars 1 1, the telescoping arrangement permitting of adjustment of the lens casing, with respect to the slide carrier. Pivotally attached to the lens casing of frame 41, are two shutter seginents'43, so positioned that they may overlap to close the opening d4 registering with the lens. Each shutter segment is connected, bymeansof links 45,"with the ends 'oftlie lever 46', pivoted to the frame il, a

" spring 47 engaging one end of-said lever to .holdthe' samein position to retain the segf Hijents 43' in normally closed position. Movement of the lever 46 may be adjustably limited by means of an abutment screw48 fin] order'to operate the shutter segments id automatically' in time with the reciprocation of the slide carrier 16, a rock shaft 49 is provided having itsre'ar end extended throughthe frame 13, and provided with "an'actuatormember 50, positioned to be engaged by tappetzinember s 51 and 52, at flt'ach'e'd to the slide carrier.

Telescoping withthie rack shaft49 is a shaft 53 provided "with an n n positioned to engageone arm of lever 46, said shaft 1 53 being supported in a suitable bearing 55. In order" to check up-any lost motion between the slide carrier and the shutter segments, or to make provision for'ad ustinentshould the parts get out of register the tappe't' members 51 and 52 may be provided withadjustable abutment screws 56 to engageactuator 5Q;

I The pro ectmg'apparatus above described ma 'be employed with any preferred form of lamp casing, condenser, etc. In the drawing, the'lamp ca'sing'is indicated at 57- and the condenser arts, The water cell 59 is preferably mounted upon guides 60 so that the 's'amemay be moved into and out of operative positiom-bemg maintained in its uppermost'po'sitmn in line with ;thecondenser,

'loy'means'of a suitable gage 61. When the apparatus is not in use the gage '61 may be disconnected and the water celllowered.

In operation,"one or the other of the openings' 18,' is alwaysin register'with the open- "ing 44 leading to the-lens easing; "By this arrangement the'slide whichis disposed op- 'posi te said opening is beingprojectedwhile "the operator is placing a new slide in the slide carrier opposite the other opening 18,

- Assuming that the slide. carrier is in its lowermost positiomand the upperslide is being proj'ected,'when it is desired to change the 1 picture" the' shaft '25 is rotated forwardly, i'elevatingthe slide carrier through as the tappet' member 51 is disengaged from shutter 'isegi'nents 43 back; The shutter will a :remain'clos'ed until-"the'slide.c'arrierreaches the uppermost limit of its movement. As

the slide carrier approaches the limit of its 'movement the tappet member 52 engages the actuator 50 thereby rocking the shaft 49 and its telescoping member 53, bringing the angular end 5 f into engagement with the lever 46, moving the latter against the tension of the spring 47, and thereby separating the shutter segments 43. The slide carrier will remain in the upper-most position, being counterbalanced by the drum 26, until the operator desires to exhibit the new slide which has been-placed in the upper part of the slide carrier 16, whereupon the reverse rotation of the shaft 525, permits the shutter to again close, and remain closed until the tappet engages the actuator 50, again rocking the shaft 50 and its member 54.

Any suitable means may be provided to prevent relative rotation of shaft 53 and the rock shaft 49, but it is preferred to make these elements of angular cross section. Movementfof the slide carrier in either direction is limited by stop screws or adjustable abutments carried by the slide and positioned to engage stationary portions of the frame.

Having thus explained the nature of my invention, and described an operative manner of constructing and using the same, at though without attempting to set'forth all of the forms in which it may be made, or all of the forms of its use, the following is claimed.

1. An improvement in projecting apparatus comprising a supporting frame provided with guides, a slide carrier slidably engaging said guides and having a plurality of slide supporting portions, the openingsof which are all on the same side of the slide carrier, a transversely disposed actuaj tor shaft positioned in front of the plane of movement of the slide carrier, and connections between said actuator shaftand said slide carrier.

'2. An improvement in projecting apparatus comprising a supporting frame pro vided with vertically disposed guides, a slide carrier slidably engaging said guides and having superposed slide supportingportions, and means for counterbalancing the slide carrier.

ber connected with said slide carrier.

l. An improvement in. projecting apparatus comprlslng asupportmg frame provided with vertically disposed guides, a slide carrier slidably'engaging said guide, and vhaving superposed shdmgportions, a transversely disposed actuator shaft supported by said frame in front of the plane of movement of said slide carrier, and means operated by said shaft for reciprocating said slide carrier.

5. An improvement in projecting apparatus comprising a supporting frame provided With vertically disposed guides, a slide carrier slidably engaging said guides and having superposed slide supporting portions, an actuator shaft supported by said frame, means operated bysaidshaft for reciprocating said slide carrier, and means for counterbalancing said slide carrier.

6. An improvement in projecting apparatus comprising a supporting frame provided with vertically disposed guides, a slide carrier slidably engaging said guides and having superposed slide supporting portions, an actuator shaft supported by said frame, an actuator drum secured to said shaft, and flexible connections between said drum and said slide carrier.

7. An improvement in projecting appara tus comprising a supporting frame provided With vertically disposed guides, a slide carrier slidably engaging said guides and having superposed slide supporting portions, an actuator shaft supported by said frame, an actuator drum secured to said shaft, flexible connections between said drum and said slide carrier, and means for adjusting the tension on said flexible member.

8. An improvement in projecting apparatus comprising a supporting frame provided With verticallydisposed guides, a slide carrier slidably engaging sald guides and having superposed slide supporting portions, an actuator shaft supported by said frame, an actuator drum secured to said shaft, and flexible connections between said drum and said slide carrier, said drum having cut out portions to permit the drum to counterbalance said slide carrier.

9. An improvement in projecting apparatus comprising a supporting frame having tubular guides, a slide carrier having a guide frame slidably engaging said tubular guides, guide rods attached to said slide carrier and telescoping with said guides, and means for reciprocating said slide carrier.

10. An improvement in projecting apparatus comprising a supporting frame having tubularv guides, a slide carrier having a guide frame slidably engaging said tubular guides, guide rods attached to said slide carrier and telescoping with said guides, means for'reciprocating said slide carrier, and means for counterbalancing said slide carrier.

11. An improvement in projecting apparatus comprising a supporting frame having upstanding guide arms, a slide carrier having superposed slide supporting portions, a guide frame attached to said slide carrier and engaging said guides, means for reciprosaid guides and having superposed slide supe porting portions, means for reciprocating said sl1decarr1er, and means for counterbalancing the sllde carrier.

13. An improved projecting apparatus.

comprising a frame, a reciprocatory slide carrier supported thereby, a lens supporting frame having an opening therein, a shutter mechanism attached to said lens frame, and means actuated by the slide carrier at each limit of its reciprocable movement for operating the shutter mechanism.

l-l. An improved projecting apparatus comprising a frame, a reciprocatory slide carrier supported thereby, a lens-supporting frame having an opening therein, shutter segments pivoted to said 1enssupporting frame, means for normally holding said shutter segments in closed position, and means actuated by the slide carrier for maintaining the shutter segments in open posi tion.

15. An improved projecting apparatus comprising a frame, a reciprocatory slide carrier supported thereby, a lens-supporting frame having an opening therein, shutter segments pivoted to said lens-supporting frame, a lever for actuating said segments, means acting normally to close said segments, and means actuated by the slide carrier and engaging said lever to maintain the segments in open position.

16. An improved projecting apparatus comprising a frame, a reciprocatory slide carrier supported thereby, a lens-supporting frame having an opening therein, shutter members pivoted to the lens-supporting frame, means acting to normally close said shutter members, a rock shaft actuated by movement of the slide carrier, and means connected With said rock shaft for engaging said lever to maintain the shutter members in open position.

17 An improved projecting apparatus comprising a frame, a reciprocatory slide carrier supported thereby, a lens-supporting frame having an opening therein, shutter members pivoted to said lens-supporting frame, means normally acting to move the shutter members to closed position, a rock shaft provided with an actuator, means carried by the slide carrier for engaging said actuator, and means carried by the rock shaft for engaging said lever to maintain the shutter members in open position.

18. An improved projecting apparatus comprising a frame, a reciprocatory slide carrier supported thereby, a lens-supporting frame having an opening therein, shutter members pivoted to said lens-supporting frame, means normally acting to move the shutter members to closed position, a rock shaft provided with an actuator, adjustable abutmentscarriedby the slide carrier and positioned to engage said actuator; and

means carried by the rock shaft for engaging'said lever to maintain the shutter members in open positioin 19. A projecting" apparatus comprising a supporting frame, a reciprocable slide cares-mess slide carrier at each limit of the reeiprocable movement of said slide carrier.

20. in improved projecting apparatus comprising a movable slide carriel. and shutter mechanism controlled by movement of said slide carrier and means for automatically operating said shutter mechanism when said slide carrier reaches the limit of its movement.

21. An improved projectingapparatus comprising amovable slide carrier, a shutter operating lever, means controlled by movement of said slide carrier for automatically actuating said lever when said slide carrier reaches the limit of its movement.

In testimony whereof I have hereunto set n'iy hand.

JOSEPH A. ENGLAND.

Gopiesof this patent maybe obtained for five cents each, by addressing the Commissioner of llatents,

Washington, D. C.